PSAT math interactive book

updated and TOTALLY FREE

your favorite app for the new PSAT is 

now totally free 

for a few days. Available on AppStore for iPhones, iPads and Macs.

you can find the app here:

Application for  

iPhones, iPads and Macs 

348 exercises with workout solutions. 

Millions of printable tests. 

Full theory in 32 chapters. 

Questions: play & learn.